Xenovia Quarta

Xenovia Quarta is one of the many female protagonists of High School DxD New and. She is a third-year high school student at Kuoh Academy in Class 3-B and is a natural-born Holy Sword user who wields the Durandal. After learning the truth of God's death in the war, she was excommunicated from the Church and decided to join the Occult Research Club as Rias' second Knight, alongside Yuuto. After Issei's promotion, she now serves under him as his first Knight.

Personality
After being reborn as a Devil, however, she gains a very close relationship with Asia, being touched by her kindness and apologizes for calling her a witch when they first met.

While a faithful member of the Church, her beliefs are flexible enough to accept help from a Dragon such as receiving a free lunch (after Irina spent all their money on a fake painting of a Saint) and wanting to not only accomplish their mission but survive afterward as well.

In battle, Xenovia appears to be a bit arrogant, stubborn, and rarely using her head and attempting to overwhelm her opponents with pure power and strength instead of being subtle or using skill. According to Issei, her fighting style is comparable to that of a Rook despite being a Knight. As Xenovia was raised in the Church, she lacks common knowledge on the life of a normal person, evident when she brought a box of condoms to school as well as wanting to give birth to strong children, and has chosen Issei as her mate. As the series progresses, it is shown that Xenovia has developed genuine romantic feelings towards Issei due to him protecting his comrades even if he gets injured by doing so.

While still a faithful Christian, Xenovia has become extremely flexible and open-minded with her beliefs as shown when she deeply sympathized with Masaomi's tragedy and during their Second fight, she shed tears for Masaomi's agony contrary to her calm and serious nature in battle.